And yes...I've seen many people get "drunk" before without consuming a drop of alcohol. It actually happens all the time at college parties. Sometimes I think it's conscious and other times I think it's unconscious. If you ever attend one, watch carefully what each people do. Plenty of people actually drink, but some of them fill up their cup, maybe halfway, at the keg, and then nurse that single half-beer for the whole party...but get progressively "drunker" as everyone around them does.